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KENNEDY SPACE CENTER, FLA. -- The flag at right identifies Space Shuttle Discovery on Launch Pad 39A after its rollout and before the Rotating Service Structure is moved around it. Scheduled to launch Oct. 5 at 9:38 p.m. EDT on mission STS-92, Discovery will be making the 100th Space Shuttle mission launched from Kennedy Space Center. Discovery also will be making its 28th flight into space, more than any of the other orbiters to date. STS-92 is a mission to the International Space Station, carrying the Z1 truss, which is the first of 10 trusses on the Station, and the third Pressurized Mating Adapter